package com.kele.config;

import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.servlet.Filter;
import javax.sql.DataSource;
import java.util.HashMap;
import java.util.Map;

@Configuration
public class DruidConfig {

    @ConfigurationProperties(prefix = "spring.datasource")
    @Bean
    public DataSource druidDataSource(){
        return new DruidDataSource();
    }

    //后台监控 相当于web.xml ServletRegistrationBean
    //因为没有SpringBoot 内置了Servlet ，所以没有web.xnl  替代方法ServletRegistrationBean
    @Bean
    public ServletRegistrationBean statViewServlet(){
        ServletRegistrationBean<StatViewServlet> bean = new ServletRegistrationBean<>(new StatViewServlet(),"/druid/*");

        //后台需要有人登陆，账号密码配置
        HashMap<String, String> initParameters = new HashMap<>();

        //增加配置
        initParameters.put("loginUsername","admin");
        initParameters.put("loginPassword","123456");

        //允许谁可以访问  如果value不写值  那么全部人都可以访问
        initParameters.put("allow","");

        //禁止谁可以访问        initParameters.put("kele","123.12.12.123")

        bean.setInitParameters(initParameters);//设置初始化参数
        return bean;
    }


    //filter
    @Bean
    public FilterRegistrationBean webStatFilter(){
        FilterRegistrationBean<Filter> bean = new FilterRegistrationBean<>();
        bean.setFilter(new WebStatFilter());
        //可以过滤那些请求
        Map<String, String> initParameters = new HashMap<>();
        //那些东西不进行统计
        initParameters.put("exclusions", "*.js, *.css, /druid/*");

        bean.setInitParameters(initParameters);
        return bean;
    }
}
